Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (1): 20210337.doi: 10.7503/cjcu20210337

• Article • Previous Articles     Next Articles

Photochromism and Photomagnetism in Two Dinuclear Lanthanide Complexes

XU Fei, LI Gangmei, HAN Songde(), WANG Guoming   

  1. College of Chemistry and Chemical Engineering,Qingdao University,Qingdao 266071,China
  • Received:2021-05-13 Online:2022-01-10 Published:2021-12-01
  • Supported by:
    the National Natural Science Foundation of China(21601099);the Key Research and Development Project of Shandong Province, China(2019GGX102006)

Abstract:

Photomagnetic materials have many potential applications in assorted domains because of the merge of molecular electronics and molecular magnetism in one material. Hitherto, most of these materials feature photomagnetic performance at low temperature, which heavily restrict their applications. Thus, it is necessary to enlarge the working temperature for practical application. Herein, we utilized the photoinduced electron transfer(ET) strategy in the photochromic material system to quest photomagnetic materials at ambient temperature, that is, coordination-driven assembly of lanthanide nitrates and 1,10-phenanthroline(phen). The resultant complexes, [Ln2(NO36(phen)2](Ln=Gd for 1 and Dy for 2), featured isostructural discrete dinuclear structure with electron donor-electron acceptor characteristic. Photogenerated radicals driven by ET from the electron-donating nitrate to electron-accepting phen were produced after photoirradiation. Besides the eye-detectable photochromism, the photomagnetism was also present at room temperature. This study provides a general method to synthesize hybrid materials bearing photochromic and photomagnetic performance via hybridizing paramagnetic metal salt with phenanthroline derivatives.

Key words: Electron transfer, Photochromism, Photomagnetism, Donor-acceptor system, Radical

CLC Number: 

TrendMD: